Quote:
Originally Posted by Kappasmackahoe
Yeast may work, but i dont know for how long. Dry ice has a much slower rate of release. But how long do you really need the co2 to last?
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You'll find that the amount of CO2 is not very much in dry ice,and the yeast either.The yeast part get really nasty and is just a waste.Why not just spend the money and buy a CO2 bottle from a hydro store?Or just grow with out CO2 and use good ventalation instead.